我在 JScrollPane 中有一个 JPanel。创建 Panel 和 ScrollPane 后,我用 JButtons 填充 Panel。但我没有让 ScrollPane 工作。它只是不会滚动我的面板。
也许这很容易,但我在 GUI 编程方面没有这种经验。我已经搜索并尝试了一些我在那里发现的东西......但我没有让我的 GUI 工作。
import java.awt.Color;
import java.awt.Container;
import java.awt.Dimension;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import java.awt.CardLayout;
import java.util.ArrayList;
import javax.swing.JLabel;
public class GUI extends JFrame {
private Container pinnwand;
private JPanel Team = new JPanel();
private JPanel MonsterListe = new JPanel();
private JScrollPane cntAvailableMonster = new JScrollPane();
private ArrayList<JLabel> AvailableMonstersLabels = new ArrayList<JLabel>();
public GUI() {
this.pinnwand = getContentPane();
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setBounds(100, 100, 530, 443);
this.pinnwand.setLayout(new CardLayout(0,0));
this.Team.setBackground(new Color(44,44,44));
this.Team.setLayout(null);
this.MonsterListe.setMinimumSize(new Dimension(200,400));
this.cntAvailableMonster.setBounds(300, 0, 200, 400);
this.cntAvailableMonster.setPreferredSize(new Dimension(200,1000));
this.cntAvailableMonster.createVerticalScrollBar();
this.cntAvailableMonster.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
this.cntAvailableMonster.setViewportView(this.MonsterListe);
this.MonsterListe.setLayout(null);
this.Team.add(this.cntAvailableMonster);
this.pinnwand.add(this.Team,"Team");
this.setAvailableMonsters();
}
private void setAvailableMonsters() {
for(int i = 0,amount = 20;i < amount;i++) {
this.AvailableMonstersLabels.add(new JLabel("monster"+i));
this.AvailableMonstersLabels.get(i).setBounds(0, i*30, 300, 30);
this.AvailableMonstersLabels.get(i).setBackground(new Color(255,0,0));
this.AvailableMonstersLabels.get(i).setOpaque(true);
this.MonsterListe.add(this.AvailableMonstersLabels.get(i));
this.MonsterListe.setBackground(new Color(0,0,0));
}
}
public static void main(String[] args) {
new GUI().setVisible(true);
}
}
提前致谢 :)